Difference between revisions of "Sericocarpus oregonensis"
Trans. Amer. Philos. Soc., n. s. 7: 302. 1840.
Common names: Oregon white-topped aster
Synonyms: Aster oregonensis (Nuttall) Cronquist
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Revision as of 15:21, 18 September 2019
Plants 24–102 cm. Stems erect, hairy. Leaves basal and proximal-most cauline withering by flowering; cauline sessile; blades broadly lanceolate to narrowly ovate, 10–100 × 3–20 mm, margins entire, apices acuminate to acute, faces hairy. Heads 2–4 per branch, in corymbiform arrays. Peduncle bracts broadly lanceolate to narrowly ovate, hairy. Involucres 5–7 mm at flowering. Phyllaries in 3–4 series, puberulent, outer series 3–5 mm, mid series 4–6 mm. Ray florets 2–6; straps 3–6 mm, corolla tubes 3–4 mm. Disc florets 9–20; corolla tubes 3–5 mm, lobes 1–2 mm. Ovaries fusiform, 1–3 mm, strigose; pappi: inner series 5–7 mm.
Distribution
w North America.
Discussion
Subspecies 2 (2 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Stems and leaves sparsely hairy | Sericocarpus oregonensis subsp. oregonensis |
| 1 | Stems and leaves moderately to densely hairy | Sericocarpus oregonensis subsp. californicus |